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Inductive charging. The primary coil in the charger induces a current in the secondary coil in the device being charged. Inductive charging (also known as wireless charging or cordless charging) is a type of wireless power transfer. It uses electromagnetic induction to provide electricity to portable devices. Inductive charging is also used in ...
When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Wireless power transfer (WPT; also wireless energy transmission or WET) is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system ...
The Qi standard is developed by the Wireless Power Consortium. [ 1 ] As a universal, open standard Qi-enabled devices are able to connect to Qi chargers from any manufacturer. Qi was first released in 2008, and by 2017 was incorporated into more than 200 smartphones, tablets and other devices. [ 3 ]
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Resonant inductive coupling or magnetic phase synchronous coupling[4][5] is a phenomenon with inductive coupling in which the coupling becomes stronger when the "secondary" (load-bearing) side of the loosely coupled coil resonates. [5] A resonant transformer of this type is often used in analog circuitry as a bandpass filter.
SonicEnergy publicly demonstrated wireless charging of several phones such as the iPhone 7 and the Samsung Galaxy S7 phones simultaneously to USA Today. [7] In September 2018, Meredith Perry stepped down from her role as CEO as the company changed to a business-to-business model. She was replaced by Jacqueline McCauley. [8]
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